Specifications

Expanded Systems Guide10
To make DigiLink connections to Digidesign audio
interfaces:
1 Connect the primary audio interface to the
HD Core card with the provided 12-foot Dig-
iLink cable.
2 Connect a secondary Pro Tools|HD audio in-
terface to the Expansion port on the primary au-
dio interface using the 18-inch DigiLink cable
(included with the audio interface). See Figure 4
on page 9.
– or –
Connect a secondary Pro Tools|HD interface to
the DigiLink on the next card (HD Accel or
HD Process).
3 Connect additional Pro Tools|HD audio inter-
faces to subsequent Pro Tools|HD audio inter-
faces or cards. See Figure 5 on page 9.
4 If connecting a Digidesign Legacy audio inter-
face (such as the 888|24 I/O), refer to “Connect-
ing Legacy Audio Interfaces” on page 10.
Connecting Loop Sync
To connect Loop Sync:
1 Connect the Loop Sync Out of the primary in-
terface to the Loop Sync In of the second inter-
face with the provided Loop Sync cables.
2 Connect the Loop Sync Out of the second in-
terface to the Loop Sync In of the next interface
and so forth.
3 Connect the Loop Sync Out of the last inter-
face to the Loop Sync In of the primary inter-
face.
Connecting Legacy Audio Interfaces
Each 192 I/O, 192 Digital I/O, and 96 I/O can
support 16 channels of audio to and from
Digidesign legacy audio interfaces, or Legacy
I/Os. These include the 888|24 I/O, 882|20 I/O,
1622 I/O, 24-bit ADAT Bridge I/O, and the orig-
inal ADAT Bridge I/O. The 888 I/O and 882 I/O
interfaces are not supported with Pro Tools HD.
(The 96i I/O does not provide a Legacy port.)
The Legacy Peripheral port functions like the
Expansion port.
A single Legacy I/O can be connected to the Leg-
acy Peripheral port using any Pro Tools MIX pe-
ripheral cable. Two Legacy I/Os can be con-
nected to a single Legacy Peripheral port using a
“Y” cable (16-channel Peripheral Cable
Adapter).
The maximum number of Legacy I/Os that can
be connected to a Pro Tools|HD system is eight;
requiring four Pro Tools|HD audio interfaces
and four 16-channel Peripheral Cable Adapters.
To connect Digidesign Legacy audio interfaces:
1 Connect one end of a Pro Tools|24 MIX pe-
ripheral cable to the Legacy port on a 192 I/O,
192 Digital I/O, or 96 I/O.
2 Connect the other end of the cable to your
MIX-compatible audio interface.
When using a SYNC peripheral, the SYNC
peripheral is considered the primary inter-
face of the Loop Sync connection. For more
information, refer to the SYNC peripheral
guide.
The Legacy port and the Expansion port
both use Group B: Channels 17–32. you
must choose between the Legacy port and
the Expansion port in the Pro Tools Hard-
ware Setup dialog.
The Legacy port is not available in
Pro Tools sessions at sample rates greater
than 48 kHz.